1301421420 has 144 divisors (see below), whose sum is σ = 4436332992. Its totient is φ = 306408960.

The previous prime is 1301421389. The next prime is 1301421421. The reversal of 1301421420 is 241241031.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1301421393 and 1301421402.

It is not an unprimeable number, because it can be changed into a prime (1301421421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41730 + ... + 65910.

It is an arithmetic number, because the mean of its divisors is an integer number (30807868).

Almost surely, 2^1301421420 is an apocalyptic number.

1301421420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1301421420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2218166496).

1301421420 is an abundant number, since it is smaller than the sum of its proper divisors (3134911572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1301421420 is a wasteful number, since it uses less digits than its factorization.

1301421420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24232 (or 24227 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1301421420 is about 36075.2189182547. The cubic root of 1301421420 is about 1091.7905144990.

Adding to 1301421420 its reverse (241241031), we get a palindrome (1542662451).

The spelling of 1301421420 in words is "one billion, three hundred one million, four hundred twenty-one thousand, four hundred twenty".